This is a car pet bag specially customised for pets - Can be used in front or rear seats- No need to install - The seat belt is wrapped around the car seat like a passenger - Seat belt in the bag, that can be tied to the dog's collar or harness - The bag and mat are removable for easy cleaning. - The bottom is non-slip design. - The bottom pillow is removable, filled with foam and Machine washable - Bottom is supported with wood, that can be removed via zip when washing the bag.